Search a number
-
+
30441709520 = 2454189104281
BaseRepresentation
bin11100010110011101…
…111001111111010000
32220120112110001220222
4130112131321333100
5444321034201040
621552411252212
72125242155465
oct342635717720
986515401828
1030441709520
1111a01607a22
125a96a4a068
132b41a4b391
14168ad8966c
15bd27cabb5
hex716779fd0

30441709520 has 80 divisors (see below), whose sum is σ = 73318588560. Its totient is φ = 11746099200.

The previous prime is 30441709513. The next prime is 30441709553. The reversal of 30441709520 is 2590714403.

It can be written as a sum of positive squares in 8 ways, for example, as 8992349584 + 21449359936 = 94828^2 + 146456^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239780 + ... + 344060.

It is an arithmetic number, because the mean of its divisors is an integer number (916482357).

Almost surely, 230441709520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30441709520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36659294280).

30441709520 is an abundant number, since it is smaller than the sum of its proper divisors (42876879040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30441709520 is a wasteful number, since it uses less digits than its factorization.

30441709520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104424 (or 104418 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 30441709520 in words is "thirty billion, four hundred forty-one million, seven hundred nine thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 41 80 82 89 164 178 205 328 356 410 445 656 712 820 890 1424 1640 1780 3280 3560 3649 7120 7298 14596 18245 29192 36490 58384 72980 104281 145960 208562 291920 417124 521405 834248 1042810 1668496 2085620 4171240 4275521 8342480 8551042 9281009 17102084 18562018 21377605 34204168 37124036 42755210 46405045 68408336 74248072 85510420 92810090 148496144 171020840 185620180 342041680 371240360 380521369 742480720 761042738 1522085476 1902606845 3044170952 3805213690 6088341904 7610427380 15220854760 30441709520